Quinoline compounds and process of making same



Patented July 5, 1949 UNITED STATES PATENT OFFICE} 2,474,820 r I oomouns COMPOUNDS AND raoosss or MAKING slum Joseph H. Burckhalter, Detroit, Eldon M. Jones and Albert L. Rawlins, Grosse Pointe Woods, Frank H. Tendick, Grosse Pointe Park, and Walter F. Holcomb, Detroit, Mich., assignonto Parke, Davis & Company, Detroit, Mioln, a corporation of Michigan Application February 8, 1845, Serial No. 576,900

14 Claims. (Cl. 260-286) No Drawing.

1 This invention relates to a class of new chemical compounds having the general formula for the free base on J: 1 NH-E CH1N (R) where Yn represents 11 substituents Y, n being 1, 2 or 3 and Y a substituent of the class consisting of hydrogen, -NO2, -CN, COOH and alkali metal salts and lower alkyl esters thereof, halogen, aminopgroups hydrolyzable to amino, saturated heterocyclic secondary amines such as, piperidine, pyrrolidine, morpholine and mmmorpholine, lowermono and di-alkyl amino, lower alkyl, lower hydroxy alkyl, lower alkoxy, aryl and lower alkyl substituted aryl. The group CH2N (R) in the above formula is either in the ortho or para position to the hydroxy group in said formula. N in said group, CH2N (R), when taken with R forms a saturated or unsaturated heterocyclic ring system which may or may not be interrupted by hydrogen, chlorine, bromine, hydroxy, lower alkoxy, lower alkyl (saturated or unsaturated), aryl or it may be the sameas the group These new compounds are useful therapeutic agents and, in general, they are characterized by their toxicity to plasmo'dia. These compounds may be used either in the form of their bases or their salts with organic or inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, sulfamic acid, acetic acid, lactic acid, tartaric acid, gluconic acid, citric acid and alkyl sulfonic acids or as the insoluble salt of methylene disalicylic acid. i

This application is a continuation-in-part of our copending application, Serial No, 539,990, filed June 12, 1944, now Patent No. 2,428,355, issued October '7, 1947.

The new compounds of this invention may be prepared by the condensation of certain intermediates which, for convenience, are herein designated as compounds A and B. Compound z A is a substituted amino phenol and has the general formula,

0H NHra canvas. X

Compound A where --CH:N (R) and x have the same significance as described above.

Compound 13 is a halogen substituted and has the general formula Compound B where Y and n have the same significance as given above.

It should also be understood from the above formula that instead of having a chlorine atom at the position 4, intermediate B may have a bromine atom in this position.

The condensation may be carried out by causing approximately equimolar quantities of compounds -A and B to react in the presence or abquinoline sence of a suitable aqueous or non-aqueous orpara to the phenolic hydroxyl, with a reactive halogen atom selected from the class consisting of chlorine and bromine and-which is attached to the carbon atom in the 4 position of a quinoline compound of the formula,

, Cl(Br) Y. F

or a dilute inorganic anasao a Y The latter compound is then condensed with mammal-4 (3' N piperidvlmethui 4'- formaldehyde (e. g. as solid polymer or gas in hydroxuanilmo) 7 chloroquinoufle dihudrosolution in aqueous or organic solvents) and a chloride I heterocyclic amine having at least one replaceg on able hydrogen as defined previously by N (R.1 5 E: CHICK! or with the equivalent products or mixtures of on cg, I HN/ cmproducts resulting from first condensing said 4 dilute 4 amine and formaldehyde, thereby introducing the I no] group CH.:N (R) into the aryl nucleus ortho 7 4301 or para to the phenolic hydroxyl to form a com- 10 ran pound of the formula, 6

. on t 6 1 NH :l omNqs) I I 5 g, 7 01 Y v onm f cn,

, -l omc i -2HC1 I N wherein Y, -N (R), x and n have the same H', significance as previously stated. Both reactions which lead to the formation oi these new compounds of the above type may be carried out li acs:

in neutral, acidic or basic media by employment H|N/ on.

of a suitable solvent. v 01 The following specific examples serve to illus- 1 mm trate our invention but do not, however, limit it therem v 7.08 g. of 2-N-piperidylmethyl-4-acetylaminor phenol and 15 cc. of 20% hydrochloric acid are x mp 1- 0w 0 nulmthu vso refluxed for one hour, the solution cooled and the drozcyanilino) chloroquinoline dihydrochlopH adjusted t about four by t addmon of 5 N ride sodium hydroxide solution. A mixture consisting of 5.94 g. of 4,7-dichloroquinoline, 15 cc. of di- OH CH CH 0H CH CH oxane and 15 cc. of water is added and the mixdilute ture heated under reflux for two and one-hall 0H a! CH 0 hours. The solution is cooled, made alkaline with cfi, gmcfi ammonium hydroxide and the .product which qflcl separates is removed by filtration and washed with water; M. 1?. 213-16 C. N11 40 The crude product is converted to the dihydro- :=o chloride without'iurther purification by solution B in absolute ethanol and adding an excess of hydrogen chloride in absolute ethanol. On the 0H CHICK. v addition of ethyl acetate a crystalline hydrochloride is obtained which may be recrystallized from CHZN 0 absolute ethanol-ethyl acetate mixture; M. P.

011,0 I c 3Q1-2 C. dec.

01 N Example 3.-4' .-:i(3'-N u-methylpiperidylmethill- 4'-h1 droa:um ulino)-7-chloroquinoline dihudrov Q chloride NE on CEQCH: CHaCHl HIN/ 0 l \CH: 01 cmol \0 cn-r,

N .2HCl (J (111.

' one! 7.5 g. of 2-N-morpholinylmethyl-4-acetyl-. aminophenol and 15 cc. of 20% hydrochloric acid are refluxed for one hour, the solution cooled and the pH adjusted to about four by the addition of 5 N sodium hydroxide solution. 5.94 g. 01 4,7-dichloroquinoline, 25 cc. of dioxane and 15 cc. of water are added and the resulting mixture refluxed for two hours. The solution is cooled, made alkaline with ammonium hydroxide and extracted with chloroform. The combined chloroform extract is washed with water, dried over magnesium sulfate, filtered and the filtrate evap- 0H orated to cc. Addition of alcoholic hydrogen (311,911, chloride to the chloroform solution gives a gummy H product which crystallizes on standing; M. P. \CH

292 C. dec. Recrystallization from methanolethyl acetate mixture does not change the melting point. ll 2H0l of hydrogen chloride in absolute ethanol.

30 cc. of water is refluxed for two hours.

25 cc. of water is added and the resulting mixture refluxed for two hours. The solution is cooled. made alkaline with ammonium hydroxide and the solid product which separates collected and washed with water.. product is dissolved by heating with a solution The resulting solution is diluted with acetone and cooled. The green-yellow dihydrochloride which separates is collected and recrystallized from .methanol-acetone mixture; M. P. 286-8" C.

Example '4.-4-(3'-N-thiomorpholinylmethyl-4'- 'hydroxyanilino) 7 chloroquinoline' dihudrochloride NH OH After drying, the crude.

washed with water. The dried crude product is converted to the trihydrochloride by dissolving in absolute ethanol and adding an excess of dry hydrogen chloride in absolute ethanol. The product is precipitated by the addition of anhydrous ether, the solvent decanted and the trihydrochloride recrystallized from methanolacetone mixture.

Example 6.-4- [3'-N- (3' '-amino) pipertdulmethyZ-4'-hydroxuanilinol-7-chloroquinoline tribudrochloride on o1 CH|N on,

cHlC I O NH: N

NH: anon A mixture consisting of 7.5 g. of 2-N-(3'- amino) piperidylmethyl-4-aminophenol trihydro- 7.5 g. of Z-N-thiomorpholinomethyl-4-amino Example 5.-4- [3-N-pz'perazinomethyl 4' hydrozcyanilz'nol 7 chloroquinoline trihydrochloride A mixture consisting of 7.5 g. of Z-N-piperazinomethyl-i-aminophenol trihydrochloride, 4.5

The solution is cooled, made alkaline with ammonium hydroxide and the gummy product which crystallizes on rubbing removed by filtration and chloride, 4.2" g. of 4,7-dichloroquinoline, 30 cc. of dioxane and 30 cc. of water is refluxed for two hours. The reaction mixture is cooled, made alkaline with ammonium hydroxide and the crude product extracted with chloroform. The chloroform extract is washed with water, the chloroform layer separated and dried over anhydrous magnesium sulfate. The drying agent is removed by filtration and upon the addition of an excess of hydrogen chloride in absolute ethanol to the filtrate the gummy product separates which crystallizes on standing. The crude .trihydrochloride is recrystallized from methanol-acetone mixture. Example 7.4-(3-N-marathiazinylmethyl-4-hydromyanz'lino) 7 chloroquinoline dihydrochloride OH CH CH Cl 7 s o on=o Cl -2HC1 N NH OH CH=CH H g8 C CH=C o N A mixture consisting of 10 g. of 2-N-parathiazinylmethyl-i-aminophenol dihydrochloride, 6.75

g. of 4,7-dichloroquinoline, 30 cc. of dioxane and 1 washed with water, the chloroform layer sep'ag. of 4,7-dichloroquinoline, 30 cc. of dioxane and a ratedand dried over anhydrous magnesium sulfate. The drying agent is removed by filtration and the filtrate treated with an excess of dry hydrogen chloride dissolved in absolute ethanol.

acrasao 7 8 crystallizes on standing is separated and is reh N nwuz methanol-mm mm tariff-fitment....W mat. Example s.-4-- (3' -N-parozazmuzmemvz-4-nudihwdrochleridc i droruanilino) -7-chl0r0quinoline dihildrochlo- 0H ride a v A mixture consisting of 5.62 g. oi LII-morpho- 4501 linylmethyl-4-aminophenol dihydrochloride, 4.24 g. of 8-methyl-4.'1-dichloroquinoline, cc. of dioxane and 25 cc. of water is refluxed 'for'two hours. The solution is cooled, made alkaline with ammonium hydroxide and extracted with chloroform. The combined chloroform extract is washed with water, dried over potassium carbonate and the drying agent removed by filtration. The filtrate is treated with an excess of. hydrogen chloride in absolute ethanol and the. chloroform solution decanted from the gummy A mixture consisting of 7.5 g. of 2-N-paroxazinylmethyl-l-aminophenol dihydrochlorlde, 5.35 g. of 4,7-dichloroquinoline, cc. of dioxane and 25 30 cc. of water is refluxed for two hours. The solution is cooled, made alkaline with ammonium hydroxide and the gummy product extracted with chloroform. The combined chloroform extract is washed with water, separated and dried over 30 anhydrous magnesium sulfate The drying agent precipitate. The crude product is recrystallized is removed by mtration and an excess of hydro- 7 from methanol-ethyl acetate mixture. Further gen chloride in absolute ethanol added to the p mcation may be affected by I th of filtrate. The chloroform is decanted from the gummy dihydrochloride and the residue stirred propanol in which the pmduct is msflubler with anhydrous ether until crystallization takes 242: place. After decantation of the ether the crude Example 11. 4-(3'-N-morpholinylmethul-4'- dihydrochloride is recrystallized from methanolhydromuanilmo) -6-methoa:uquinoline dihfldfdacetone mixture. chloride Example 9.-3-methyl-(3'-N-ptperidylmethyI-4' H CH CH OH CH CH hydroryanilino) 7 chloroquimline dihfldfO 6mm chloride I cmN 0 cmN 0 CHlC: CHgCl H H 01 .2301 0 ,cm

NH CH|N Y\CHQ CHI smo 01 v p g I -2HG1 N m I NH, smog.

N\/ ocrab omens -2Kci N NE on on O smog, HgN A mixture consisting of 5.58 g. of 2-N-piperidyl- C methyI-4-aminopheno1dihydrochlorlde, 4.24 g. of 3-methyl-4,7-dichloroquinoline, 25 cc. of dioxane i and 25 cc. of water is refluxed for two hours. The 7,5 f z-n-morpholinylmethyl-4-acetylam1n0- solution is filtered, made alkaline with amphenol nd 15 cc. of 20% hydrochloric acidis remonium hydroxide/mud extracted with 0- fluxed for one hour, cooled and. the pH of the form. The combined chloroform extract is solution adJusted to about 4 by the addition of W sh W h W t dried Over flnhydrfius D 5N sodium hydroxide solution. 582g. of 4-chlorosium carbon e d e d y agent removed by 6-methoxyquinoline, 25 cc. of dioxane and 15 cc. filtration. Addition of hydrogen chloride in abof water are added and the mixture refluxed for solute ethanol t the filtrate ives a gummy pretwo hours. The solution is cooled. made alkaline cipitate. The pure orange-yellow dihydrochloride with ammonium hydroxide and extracted .with is obtained by recrystallization of the gummy machloroform. The combined chloroform extract terial from methanol-acetone mixture; M. P. 272 is washed with water, dried over magnesium sul- .C. dec. 15 fate and filtered to remove the. 1 7 1 8 880M- methyl-4-acetylaminophenol and 15 cc. of 20% 9 Alcoholic hydrogen chloride is added to the hitrate and the chloroform solution decanted from the precipitated solid. The crude product is taken up in methanol and acetone is added until the solution is just turbid. On cooling and l methylquinoline and 7.92 g. of Z-N-morpholinylmethyl-i-aminophenol dihydrochloride in 25 cc. of water is heated on a steam bath for two and one-half hours. The solution is cooled, made alkaline with ammonium hydroxide and exstanding, the pale-yellow product crystallizes. tracted with chloroform. The combined chloro- The dihydrochloride is collected, washed with form extract is dried over anhydrous magnesium acetone and recrystallized from methanol-ethyl sulfate, filtered and most of the chloroform disacetate mixture; M. P. 265 C. dec. tlillesd. On cooling of the residue, the crystalline chlmde moved by filtration and recrystallized from V methanol: M. P. 238-? C. on Cmcm 0H The base is converted to the hydrochloride by omen; solution in absolute ethanol and addition or an CH1 CH1 dilute CHIN CH, excess of dry. gaseous hydrogen chloride. The

. ,0 HCl solution is warmed, acetone added and the solu- CEO 1 tion is cooled. ,The crystalline dihydrochloride .2301 is collected and recrystallized from methanolacetone mixture.

1 Example 14. 4-(3'-N-piperidylmethyl-4-hydrozyanilino)-8-mcthulquinoline dihydrochloon 01 05:05: n on on, em cmo CHICK CHaC| I CH, CH

.2301 N I CHQC i 41101 NH: 7 NE on onion, OH

crno H: I omen,

amt. 1 s- -2HC1 A mixture consisting of 6.4 g. of 2-N-piperidyl- -2HGl A mixture consisting of 5g. of 4-chloro-6 M. R270" 0. dec.

hydrochloric acid is refluxed for one hour, cooled and the pH of the solution adjusted to about 4 by the addition of 5N sodium hydroxide. 5 g. of 4-chloro-fi-methoxyquinoline in 15 cc. of dioxane and 15 cc. of water is added and the resulting mixture refluxed for two and one-half hours, cooled and made alkaline with ammonium hydroxide. The gummy, precipitated product is extracted with chloroform, the chloroform extract washed with water and dried over anhydrous magnesium sulfate. The drying agent is removed by filtration, the filtrate treated with alcoholic hydrogen chloride and the solution diluted with ether. The precipitated product is collected, washed with acetone and recrystallized from absolute ethanol-ethyl acetate mixture;

40 'methylquinoline and 2 N piperidylmethyl-4- aminophenol dihydrochloride in 25 cc. of water is heated on a steam bath for two and one-half hours. The solution is cooled, made alkaline with ammonium hydroxide and extracted with chloroform. The combined chloroform extracts are dried over anhydrous magnesium sulfate, filtered and the filtrate treated with an excess of dry, gaseous hydrogen chloride. The precipitated, gummy dihydrochloride is crystallized by rubbing, collected and recrystallized from methanolacetone mixture; M. P. 235-! C. dec.

Example, 15.3 carhethoxy 4 4- (3'-N-pipcridylmethyl-4-hydromyanilino) -6-methoxyquinoline Example 13. 4-(3'-N-morpholmulmethyl-4'- hydroxyanilinm G-methylquinoline dihydro- A mixture consisting of 5 g. of 4-chloro-6- 76 chloride 00 C'HzCH:

OH CH1N o on CHG. CHlCHg N -2HC1 65 CH,

NH I I cmcfi,

t NH OH A mixture consisting of 6.5 g. of 3-N-piperidylon (L )CECH? 7 m hyl-i-aminophenol dihydrochloride and 5.5 Q r H=N o g. of- 3-carbethoxy-4-chloro-6-methoxyqum 11 25 cc. of dioxane and 25 cc. of water is refluxed N/ me] I for two hours. The solution is cooled, made a1- kaline with ammonium hydroxide and extracted with several portions of chloroform. The com- CH:CH NO CHsN CH:

l C aC a N 480] 11 bined chloroform extract is washed with water, dried over anhydrous magnesium sulfate and the drying agent removed by filtration. Excess hydrogen chloride in absolute ethanol is added to the filtrate which causes the gummy dihydrochloride to separate. The solvent isdecanted and the crude product recrystallized, from methanol-acetone mixture.

Example 16.4 (3'-N piperidulmethyl 0-midrozyanilino) -6-nitroquinoline dimldrochloride g. of 4-chloro-6-nitroquinoline in 40 cc. of dioxane and 40 cc. of water is refluxed for two hours.

BaN

V The solution is cooled, made'alkaline with ammonium hydroxide and extracted with several portions of chloroform. The combined chloroform extract is washed with water, dried over anhydrous magnesium sulfate and filtered. The

filtrate is treated with an excess of hydrogen chloride in absolute ethanol and the gummy dihydrochloride which separates collected and washed with acetone. The crude 4-(3'-N-piperidylmethyl-4'-hydroxyanilino) 6 nitroquinoline dihydrochloride is recrystallized from methanolacetone mixture.

Example 17.-4 (a y piperidulmethyl 4 m;- drozyanilino)-6-aminoquinoline trihudrochloride a 15 g. of 4-(3'-N-piperidylmethyl-4'-hydroxyanilino)-6-nitroquinoline dihydrochloride is dissolved in 300 cc. of methanol and reduced catalytically by shaking with gaseous hydrogen in the presence of platinum oxide catalyst. After the theoretical amount of hydrogen has been abg sorbed, the catalyst is removed by filtration and the filtrate treated with an excess ofjdry hydrogen chloride in methanol. The solution is concentrated by heating on a steam bath and acetone is added to the residue. After cooling the crystalline trihydrochloride which separates is collected and recrystallizedfrom methanol-acetone mixture.

drochloride NH on 0 CHICHI CHaC NH H|N CHg-I- O--. N CH|C 2' CHIC:

on 9 I on on cute-N 1 H: H!

omc I N .zncl

10 g. of 4-(3'-N-piperidylmethyl-4'-hydroxyanilino)-6-aminoquinoline trihydrochloride is dissolved in 50 cc. of water. The solution is heated to 45-50 C. on a steam bath and a solution of 5.5 g. of anhydrous sodium acetate in 1.5 cc. of water added. 3.0 g. of acetic anhydride is added immediately with. rapid stirring and the solution allowed to cool to room temperature.- The solution is made alkaline with ammonium hydroxide, extracted with several portions of chloroform and the combined chloroform extracts washed with water. The chloroform solution is dried over anhydrous magnesium sulfate, filtered and the filtrate treated with an excess of dry, gaseous hydrogen chloride. The dihydrochloride which separates is collected and recrystallized from methanol-acetone mixture.

Some additional examples which also serve to illustrate our invention and which may be prepared by the same methods described herein include the following:

NH OH 0 lEhN l liaN NE on 50 omen,

Cl CH: H:

a. NE on on.

c-on mN n w CH-CH 41H: 5 0 '10 NH 011 on.

C Cg;

HIN/ 0 01 CH: Hi

OH CH5 (l -Olin n, CHOH 01 GH--- H:

CH /GH|CE: H:N\ B onion.

CHgCH:

CH H: CH!

CHIC

NH OB" CHICK, CHaO CH C 1 CH|CH CHaO HIN H C :CH: N

NH OH G NE: on

KIN CH:

aC: N

NE E

CHICK CH H2N\ S CHaG; N

CHzCQ: HzN CH:

CHlCg N N(C:Hi)a

m; on I /CH2C&1 HIN\ CH1 N GHCQI ECH5QH:

NH OH CHQCH: OHzO COOH H1N\ CH CHgC; N

ae'maao CHiC a CHiO COONa NH OH CHxCH:

CHIC/, N I

CHaCHg CHaC An alternate method of preparing 4 -(8'-N- piperidylmethyl -'4-hydroxyanilino) 7 chloroquinoline dihydrochloride (Example 2) is as follows:

NEG-0H c1 a N 2 v a NEG-OH /QH2CH2 +CH;0+NH -cn,

Cl CHIC I 3 NE on CHzCEz H3N\ CH5 0 wee.

- -2HCl 10 g. of p-aminophenol is dissolved in 40 cc. of

2 N hydrochloric acid and 40 cc. of dioxane, The pH of the solution is adjusted to about 4 by the addition of 10 N sodium hydroxide solution and- 18.2 g..of 4,7-dichloroquinoline added. The resulting mixture is refluxed for two hours, cooled, diluted to 600 cc. with water and made alkaline with ammonium. hydroxide. The precipitated product is removed by filtration, washed well with water and allowed to dry in the air.

A mixture consisting of 10 g. of 4-(4-hydroxyanilino) -7-chloroquinoline dissolved in absolute ethanol is treated with a solution of 3.1 g. of piperidine and 1.2 g. of formaldehyde in 25 cc. of absolute ethanol. The reaction mixture is heated under reflux for four hours, evaporated to onehalfvolume and the warm solution treated with an excess of hydrogen chloride in absolute ethanol. Acetone is added until the solution becomes turbid and then the solution is cooled. The crude hydrochloride is recrystallized from absolute ethanolethyl acetate mixture; M. P. 301-2 C. dec.

- alkaline with ammonium hydroxide.

Likewise an alternate method or preparing 4- (3'-N-piperidylmethyl 4 hydroxyanilino) 6- methoxyquinoline dihydrochloride (Example 12) is as follows:

Cl W v a with substltuents in the 2-position such as the CHaO CHaO

CHaCH! 19 g. oip-aminpphenol is dissolved in- 40 cc. of

2N hydrochloric acid andAO cc. of dioxane. The

pH of the solution is adjusted to about 4 by the 7 addition of 10 N sodium hydroxide solution and 17.7 g. of -chloro-6-methoxyquinoline added. The resulting mixture is refluxed for two hours, cooled, diluted to 600 cc. with water and made The precipitated product is removed by filtration, washed well with Water and allowed to dry in the air.

A mixture consisting of 10 g. of 4-(4'-hydroxyanilino)6-methO1gyquinollne dissolved in absolute ethanol is treated with a solution of 3.2 g. or piperidine and 1.2 g. of formaldehyde in 25 cc. of absolute ethanol. The reaction mixture is heated under reflux for four hours, evaporated to onehalf volume and the warm solution treated with an excess of hydrogen chloride in absolute ethanol. Acetone is added until the solution becomes turbid and then the solution is cooled. The crude hydrochloride is recrystallized from absolute ethanol-ethyl acetate mixture; M. P. 270 C. dec.

The intermediate heterocyclic aminomethylaminophenols herein referred to as compounds A are usually prepared from acylaminophenols by means or the Mannich reaction (copending ap- 'piication Serial No. 556,496). This particular application of the reaction consists in the condensation of a heterocyclic amine with formaldehyde and acylamlnophenols having at least one unsubstituted position Ortho or para to the phe-'- holic' hydroxy]. The resulting N-substituted heteraminomethylacylaminophenols are hydrolyzed with mineral acid to the corresponding heteraminomethylamincphenols. The same in- 'termediates can be prepared by th catalytic or 1e from the corresponding hydroxy quinolines which can be prepared by the method of Gouid and Jacobs [J. Am. Chem. Soc., 61, 2890 (1939)] or by that 01' Theos J. Thompson [M. S. Thesis, University of Nebraska, July 24, 1942].

For the preparation of quinoline intermediates 2-phenyl derivatives, the method of Knorr [Ann., 245, 378 (1888)] involving the reaction of aniline or substituted anilines with benzoyl acetic ester is used.

States Patent No. 2,233,970. 7

Attention is directed to our copendlng application Serial No. 626,906, filed November 5, 1945,

as a continuation-in-part of the instant case wherein we have described and claimed another process for obtaining the instant quinoiine compounds as well as related quinoiine compounds. Attention is also directed to certain of our other copending applications wherein somewhat related quinoline compounds are described and claimed as follows: Serial No. 556,496, filed September 29, 1944, Serial Nos. 626,907 and 626,908, filed November 5, 1945, and Serial No. 722,474, filed January 16, 1 947.

What we claim as our invention is:

1. A compoundoi the class consisting of a free base and its acid addition salts, said free base having the formula where Y is a member of the class consisting of hydrogen, CN, COOH, --C00(lower alkyl),

CIElaN (R) halogen, lower alkyl', lower alkoxy and phenyl, n

is an integer of the group consisting of 1 and 2,

' X is a member of the class consisting of hydrogen and halogen, -CH2N (R) .is a group attached to a carbon atom of the aryl nucleus in one of the positions ortho and para to the hydroxy group and N in said group CH2N (R) taken with It forms a ring system of the class consisting of saturated and unsaturated fivemembered heterocyclic ring systems, saturated and unsaturated six-membered heterocyclic ring systems, members wherein the carbon chain of said six-membered ring system in interrupted by one of the members of the class consisting of O, S, N and NH and further members wherein said group R is substituted on a carbon atom thereof by at least one member of the class consisting of =0, OH, NHz and lower alkyl.

2.,An acid addition salt of a compound having the following formula: a

The 3substituted-4hydroxyquinolines. are prepared by the method given in United I h 17 8. An acid addition salt of a compound having the following formula 4. An acid addition salt of a compound having the following formula 'l. A compound having the formula C5011 omen, 151/ o CHgC N -2H0l 8. The process for preparing a compound having the formula on i O 1 .0mm, NH x which comprises condensing a compound having the formula with a compound having the formula where Hal is a member of the class consisting of Cl and Br, Y is a member of the class consisting of hydrogen, CN, -0003. --CO(lower 18 alkyl), halogen, lower alkyl, lower alkoxy and phenyl, n is an integer of the group consisting of 1 and 2,- x is a member of the class consisting of hydrogen and halogen, and CH2N (R) is a 5 group attached'to a carbon atom of the aryl nucleus in one of the positions ortho and para to the hydroxy group and N in said group CH:N (R) taken with R forms a ring system of the classconsisting of saturated and unsaturated flve-membered heterocyclic ring systems, saturated and unsaturated sixmembered heterocyclic ring systems, members wherein the carbon chain of said six-membered ring system is interrupted by one of the members of the class consisting of -O, -S-, --N and NH and further members wherein said group R is substituted on a carbon atom thereof by at least one member of the "class consisting of =0, OH, NH: and lower alkyl.

9. The process which comprises condensing a compound having the formula omen, OmN c with a halogenated quinoline having the formula as o thereby obtaining a compound having the formula NE on I omen, mu n 10. The process which comprises condensing a compound having the formula 0H CHICK] OHJN/ \CHI CH1C g with a halogenated quinollne having the formula thereby obtaining a compound having the formula 10 NH O nm on, Ci N CHaCi 11. The process which comprises condensing a. compound having the formula. NE on Union on 01mg, a 1m 0 cm1- o i cmci 12. A hydrohalide salt of 4-[3'-N-plperldylm methyl-4'-hydroxyani1ino]-'7-chloroquinoline.

' 13. A hydrohalide salt of 3-methyl- [3'-N- with a halogenated quinoline having the formula lperldylmethyl 4' hydroxyanilmo] 'zm u quinoline.

14. A hydrohallde salt of 4-[3'-N-morpholinylmethyl-4'-hydroxyani1ino1 -8 -methoxyquinol1ne. 5 JOSEPH a ZBURCKHALTER.

KR low M. JONES. ALBERT L. RAWLINS.

H. TENDICK- WALTER F. HOLCOMJB.

No references cited.

thereby obtaining a compound having the formula 20 

